From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 113B1C5519F for ; Wed, 25 Nov 2020 06:11:48 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 77364208CA for ; Wed, 25 Nov 2020 06:11:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 77364208CA Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id CE1BE6B006E; Wed, 25 Nov 2020 01:11:46 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id C90BC6B0070; Wed, 25 Nov 2020 01:11:46 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id BA8C96B0071; Wed, 25 Nov 2020 01:11:46 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0227.hostedemail.com [216.40.44.227]) by kanga.kvack.org (Postfix) with ESMTP id A36556B006E for ; Wed, 25 Nov 2020 01:11:46 -0500 (EST) Received: from smtpin26.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 6AA678249980 for ; Wed, 25 Nov 2020 06:11:46 +0000 (UTC) X-FDA: 77521919412.26.skate98_04022ea27374 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin26.hostedemail.com (Postfix) with ESMTP id 453ED1804B669 for ; Wed, 25 Nov 2020 06:11:46 +0000 (UTC) X-HE-Tag: skate98_04022ea27374 X-Filterd-Recvd-Size: 3436 Received: from szxga06-in.huawei.com (szxga06-in.huawei.com [45.249.212.32]) by imf46.hostedemail.com (Postfix) with ESMTP for ; Wed, 25 Nov 2020 06:11:45 +0000 (UTC) Received: from DGGEMS410-HUB.china.huawei.com (unknown [172.30.72.59]) by szxga06-in.huawei.com (SkyGuard) with ESMTP id 4CgrB346lSzhfQ7; Wed, 25 Nov 2020 14:11:23 +0800 (CST) Received: from [10.136.114.67] (10.136.114.67) by smtp.huawei.com (10.3.19.210) with Microsoft SMTP Server (TLS) id 14.3.487.0; Wed, 25 Nov 2020 14:11:36 +0800 Subject: Re: [PATCH 38/45] block: switch partition lookup to use struct block_device To: Christoph Hellwig , Jens Axboe CC: Tejun Heo , Josef Bacik , "Konrad Rzeszutek Wilk" , Coly Li , "Mike Snitzer" , Greg Kroah-Hartman , Jan Kara , Johannes Thumshirn , , Richard Weinberger , Jan Kara , , , , , , References: <20201124132751.3747337-1-hch@lst.de> <20201124132751.3747337-39-hch@lst.de> From: Chao Yu Message-ID: Date: Wed, 25 Nov 2020 14:11:35 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <20201124132751.3747337-39-hch@lst.de> Content-Type: text/plain; charset="windows-1252"; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [10.136.114.67] X-CFilter-Loop: Reflected X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 2020/11/24 21:27, Christoph Hellwig wrote: > Use struct block_device to lookup partitions on a disk. This removes > all usage of struct hd_struct from the I/O path, and this allows removing > the percpu refcount in struct hd_struct. > > Signed-off-by: Christoph Hellwig > --- > block/bio.c | 4 +- > block/blk-core.c | 66 ++++++++++++++---------------- > block/blk-flush.c | 2 +- > block/blk-mq.c | 9 ++-- > block/blk-mq.h | 7 ++-- > block/blk.h | 4 +- > block/genhd.c | 56 +++++++++++++------------ > block/partitions/core.c | 7 +--- > drivers/block/drbd/drbd_receiver.c | 2 +- > drivers/block/drbd/drbd_worker.c | 2 +- > drivers/block/zram/zram_drv.c | 2 +- > drivers/md/bcache/request.c | 4 +- > drivers/md/dm.c | 4 +- > drivers/md/md.c | 4 +- > drivers/nvme/target/admin-cmd.c | 20 ++++----- > fs/ext4/super.c | 18 +++----- > fs/ext4/sysfs.c | 10 +---- > fs/f2fs/f2fs.h | 2 +- > fs/f2fs/super.c | 6 +-- For f2fs part, Acked-by: Chao Yu Thanks, > include/linux/blkdev.h | 8 ++-- > include/linux/genhd.h | 4 +- > include/linux/part_stat.h | 17 ++++---- > 22 files changed, 120 insertions(+), 138 deletions(-)